Notable events involving Caradoc include:

23 Oct 1939The British light cruiser HMS Orion (Capt. H.R.G. Kinahan, RN) and the Canadian destroyer HMCS Saguenay (Lt.Cdr. G.R. Miles, RCN) intercept the German tanker Emmy Friedrich (4372 GRT) in the Yukatan Strait west of Tampico. When the British light cruiser HMS Caradoc (Capt. E.W.L. Longley-Cook, RN) also arrived on the scene the Germans scuttled their own ship to prevent her capture.

11 Dec 1940HrMs Van Kinsbergen (Cdr. J.L.K. Hoeke, RNN) intercepts the German blockade breaker Rhein (6031 GRT, built 1926) west of the Florida Strait in position 24°55'N, 83°15'W. Unfortunately before the German ship can be captured it is set on fire by her own crew. The wreck is sunk later that day by the British light cruiser HMS Caradoc (Capt. J.S. Bethell, RN).